2025ahxd | Transient Name Server

RA/DEC (2000)

00:51:36.141 +29:42:39.95

12.9005888 +29.711097590909

Type

SN Ia

Redshift

0.016455

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-12-22 02:25:15.003

TNS AT

Y

Public

Y

Discovery Mag

20.1472

Filter

g-ZTF

Reporter/s

Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)

Spectra

Select	ID	Obs-date (UT)	Tel / Inst	Exp-Time	Observer/s	Reducer/s	Group	Spectrum ascii file	Spectrum fits file	Spec. Type	Assoc. Groups	End prop. period	Remarks
	22693	2025-12-28 12:18:35	Lijiang-2.4m / YFOSC		Jujia Zhang		LiONS	tns_2025ahxd_2025-12-28_12-18-34.766_Lijiang-2.4m_YFOSC_LiONS.dat		Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), 0 (observed) ▌Show H at z=v_exp= km/s ▌Show He at z=v_exp= km/s ▌Show He II at z=v_exp= km/s ▌Show C II at z=v_exp= km/s ▌Show C III at z=v_exp= km/s ▌Show C IV at z=v_exp= km/s ▌Show N II at z=v_exp= km/s ▌Show N III at z=v_exp= km/s ▌Show N IV at z=v_exp= km/s ▌Show N V at z=v_exp= km/s ▌Show O at z=v_exp= km/s ▌Show [O I] at z=v_exp= km/s ▌Show O II at z=v_exp= km/s ▌Show [O II] at z=v_exp= km/s ▌Show [O III] at z=v_exp= km/s ▌Show O V at z=v_exp= km/s ▌Show O VI at z=v_exp= km/s ▌Show Na at z=v_exp= km/s ▌Show Mg at z=v_exp= km/s ▌Show Mg II at z=v_exp= km/s ▌Show Si II at z=v_exp= km/s ▌Show S II at z=v_exp= km/s ▌Show Ca II at z=v_exp= km/s ▌Show [Ca II] at z=v_exp= km/s ▌Show Fe II at z=v_exp= km/s ▌Show Fe III at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Tellurics ▌Show Galaxy lines at z= ▌Show WR-WN at z=v_exp= km/s ▌Show WR-WC/O at z=v_exp= km/s Remarks
	22695	2025-12-23 02:36:04	P60 / SEDM	2700	SEDmRobot	jpurdum	ZTF	tns_2025ahxd_2025-12-23_02-36-03.707638_P60_SEDM_ZTF.ascii		Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), 0 (observed) ▌Show H at z=v_exp= km/s ▌Show He at z=v_exp= km/s ▌Show He II at z=v_exp= km/s ▌Show C II at z=v_exp= km/s ▌Show C III at z=v_exp= km/s ▌Show C IV at z=v_exp= km/s ▌Show N II at z=v_exp= km/s ▌Show N III at z=v_exp= km/s ▌Show N IV at z=v_exp= km/s ▌Show N V at z=v_exp= km/s ▌Show O at z=v_exp= km/s ▌Show [O I] at z=v_exp= km/s ▌Show O II at z=v_exp= km/s ▌Show [O II] at z=v_exp= km/s ▌Show [O III] at z=v_exp= km/s ▌Show O V at z=v_exp= km/s ▌Show O VI at z=v_exp= km/s ▌Show Na at z=v_exp= km/s ▌Show Mg at z=v_exp= km/s ▌Show Mg II at z=v_exp= km/s ▌Show Si II at z=v_exp= km/s ▌Show S II at z=v_exp= km/s ▌Show Ca II at z=v_exp= km/s ▌Show [Ca II] at z=v_exp= km/s ▌Show Fe II at z=v_exp= km/s ▌Show Fe III at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Tellurics ▌Show Galaxy lines at z= ▌Show WR-WN at z=v_exp= km/s ▌Show WR-WC/O at z=v_exp= km/s Remarks
	22680	2025-12-22 21:35:00	Ekar / AFOSC	1800	A. Reguitti	A. Reguitti	Padova-Asiago	tns_2025ahxd_2025-12-22_21-35-00_Ekar_AFOSC_Padova-Asiago.dat		Object
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), 0 (observed) ▌Show H at z=v_exp= km/s ▌Show He at z=v_exp= km/s ▌Show He II at z=v_exp= km/s ▌Show C II at z=v_exp= km/s ▌Show C III at z=v_exp= km/s ▌Show C IV at z=v_exp= km/s ▌Show N II at z=v_exp= km/s ▌Show N III at z=v_exp= km/s ▌Show N IV at z=v_exp= km/s ▌Show N V at z=v_exp= km/s ▌Show O at z=v_exp= km/s ▌Show [O I] at z=v_exp= km/s ▌Show O II at z=v_exp= km/s ▌Show [O II] at z=v_exp= km/s ▌Show [O III] at z=v_exp= km/s ▌Show O V at z=v_exp= km/s ▌Show O VI at z=v_exp= km/s ▌Show Na at z=v_exp= km/s ▌Show Mg at z=v_exp= km/s ▌Show Mg II at z=v_exp= km/s ▌Show Si II at z=v_exp= km/s ▌Show S II at z=v_exp= km/s ▌Show Ca II at z=v_exp= km/s ▌Show [Ca II] at z=v_exp= km/s ▌Show Fe II at z=v_exp= km/s ▌Show Fe III at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Tellurics ▌Show Galaxy lines at z= ▌Show WR-WN at z=v_exp= km/s ▌Show WR-WC/O at z=v_exp= km/s Remarks

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

wide-ATLAS

ATLAS-TDO_ATLAS-05

2025-12-25 19:39:57 - 2025-12-25 19:39:57

2461035.31941 - 2461035.31941

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
542571	2025-12-25 19:39:57	2461035.31941	17.234	0.026	19.96	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot

L-GOTO

GOTO-N_GOTO-2

2025-12-20 19:39:32 - 2025-12-22 19:23:29

2461030.319116 - 2461032.307965

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
541941	2025-12-22 19:23:29	2461032.307965	18.81	0.08		ABMag	L-GOTO	GOTO-N_GOTO-2	180
541940	2025-12-20 19:39:32	2461030.319116			20.1	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-12-22 03:28:39 - 2025-12-22 03:28:39

2461031.6448958 - 2461031.6448958

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
541688	2025-12-22 03:28:39	2461031.6448958	19.7273	0.141733		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2025-12-21 04:50:54 - 2025-12-22 02:25:15

2461030.7020139 - 2461031.6008681

4

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
541687	2025-12-22 02:25:15	2461031.6008681	20.1472	0.207971		ABMag	g-ZTF	P48_ZTF-Cam
549579	2025-12-22 02:25:15	2461031.6008681	20.1472	0.207971	20.4455	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
541686	2025-12-21 04:50:54	2461030.7020139			20.9825	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]
549578	2025-12-21 04:50:54	2461030.7020139			20.5842	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-12-22 07:48:47 - 2025-12-22 07:48:47

2461031.82554 - 2461031.82554

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
542570	2025-12-22 07:48:47	2461031.82554			19.27	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot	[Last non detection]

AT Reports

ID	Time received (UT)	Sender	Reporter/s	Reporting group	Disc. Data Source	RA	DEC	Discovery date (UT)	Discovery Mag.	Filter	Related files	AT Type	Host name	Internal name	Assoc. Groups	End prop. period	Remarks	ADS Bibcode	Unreal	Auto classification
287000	2026-01-13 19:17:17	Fink	Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al.	Fink	ZTF	00:51:36.141	+29:42:39.95	2025-12-22 02:25:15.004	20.1472	g-ZTF		PSN		ZTF25ackdapv	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25ackdapv		N
282294	2025-12-25 22:11:44	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland (IfA et al.	ATLAS	ATLAS	00:51:36.130	+29:42:39.91	2025-12-25 19:39:57.024	17.234	wide-ATLAS		PSN		ATLAS25qfm	ATLAS				N
281968	2025-12-22 19:53:23	GOTO_bot	D. O'Neill,K. Ackley,M. Dyer et al.	GOTO	GOTO	00:51:36.158	+29:42:40.34	2025-12-22 19:23:28.608	18.81	L-GOTO		Other		GOTO25mgv	GOTO				N
281868	2025-12-22 06:05:15	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	00:51:36.132	+29:42:39.95	2025-12-22 02:25:15.003	20.1472	g-ZTF		PSN		ZTF25ackdapv	ZTF			2025TNSTR5128....1S	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

22694

2025-12-29 07:38:37

ZTF_Bot1

J. Sollerman, S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN Ia

0.016455

1

ZTF

2025TNSCR5219....1S

Spectra

ID	Obs-date (UT)	Tel / Inst	Exp-Time	Observer/s	Reducer/s	Group	Spectrum ascii file	Spectrum fits file	Spec. Type	Assoc. Groups	End prop. period	Remarks
22695	2025-12-23 02:36:04	P60 / SEDM	2700	SEDmRobot	jpurdum	ZTF	tns_2025ahxd_2025-12-23_02-36-03.707638_P60_SEDM_ZTF.ascii		Object

22692

2025-12-29 01:44:50

Liping Li

Liping Li, Zeyi Wang, Qian Zhai, Bo Wang, Jujia Zhang (YNAO); Xiaofeng Wang(THU)

LiONS

SN Ia

0.01645

1

LiONS

The spectrum matches that of an SN Ia at a week before maximum (e.g., SN 1999ee at -7 days via SNID).

2025TNSCR5217....1L

Spectra

ID	Obs-date (UT)	Tel / Inst	Exp-Time	Observer/s	Reducer/s	Group	Spectrum ascii file	Spectrum fits file	Spec. Type	Assoc. Groups	End prop. period	Remarks
22693	2025-12-28 12:18:35	Lijiang-2.4m / YFOSC		Jujia Zhang		LiONS	tns_2025ahxd_2025-12-28_12-18-34.766_Lijiang-2.4m_YFOSC_LiONS.dat		Object

22679

2025-12-22 22:40:30

Andrea Reguitti

Andrea Reguitti (INAF-OAPd)

Padova-Asiago

SN

0.0166

1

Padova-Asiago

Blue continuum. Could be a young CC SN in UGC 525.

2025TNSCR5133....1R

Spectra

ID	Obs-date (UT)	Tel / Inst	Exp-Time	Observer/s	Reducer/s	Group	Spectrum ascii file	Spectrum fits file	Spec. Type	Assoc. Groups	End prop. period	Remarks
22680	2025-12-22 21:35:00	Ekar / AFOSC	1800	A. Reguitti	A. Reguitti	Padova-Asiago	tns_2025ahxd_2025-12-22_21-35-00_Ekar_AFOSC_Padova-Asiago.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 287000 of Group ZTF
Previous RA, DEC: 00:51:36.132, +29:42:39.95 (12.9005503, +29.7110968)
Updated RA, DEC: 00:51:36.141, +29:42:39.95 (12.9005888, +29.711097590909)

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